use std::collections::HashMap;
use log::{info, warn, error};

// 桌面环境服务
pub struct DesktopEnvironment {
    pub running: bool,
    pub wallpaper_path: String,
    pub show_dock: bool,
    pub auto_hide_dock: bool,
    pub show_desktop_icons: bool,
    pub enable_animations: bool,
    pub windows: HashMap<u64, WindowInfo>,
    pub next_window_id: u64,
}

// 窗口信息
#[derive(Debug)]
pub struct WindowInfo {
    pub id: u64,
    pub title: String,
    pub width: u32,
    pub height: u32,
    pub x: i32,
    pub y: i32,
    pub visible: bool,
    pub focused: bool,
    pub window_type: WindowType,
}

// 窗口类型枚举
#[derive(Debug)]
pub enum WindowType {
    Normal,
    Dialog,
    Utility,
    Popup,
}

impl Default for DesktopEnvironment {
    fn default() -> Self {
        Self {
            running: false,
            wallpaper_path: "/usr/share/wallpapers/default.jpg".to_string(),
            show_dock: true,
            auto_hide_dock: false,
            show_desktop_icons: true,
            enable_animations: true,
            windows: HashMap::new(),
            next_window_id: 1,
        }
    }
}

impl DesktopEnvironment {
    pub fn new() -> Self {
        println!("初始化桌面环境服务");
        Self::default()
    }
    
    pub fn start(&mut self) -> Result<(), String> {
        if self.running {
            return Err("桌面环境已经运行".to_string());
        }
        
        self.running = true;
        info!("桌面环境服务已启动");
        Ok(())
    }
    
    pub fn stop(&mut self) -> Result<(), String> {
        if !self.running {
            return Err("桌面环境未运行".to_string());
        }
        
        // 关闭所有窗口
        for (id, window) in &self.windows {
            if window.visible {
                println!("关闭窗口: ID={}, 标题='{}'", id, window.title);
            }
        }
        
        self.windows.clear();
        self.running = false;
        info!("桌面环境服务已停止");
        Ok(())
    }
    
    /// 创建新窗口
    pub fn create_window(&mut self, title: &str, width: u32, height: u32, window_type: WindowType) -> Result<u64, String> {
        if !self.running {
            return Err("桌面环境未运行".to_string());
        }
        
        let window_id = self.next_window_id;
        self.next_window_id += 1;
        
        let window_info = WindowInfo {
            id: window_id,
            title: title.to_string(),
            width,
            height,
            x: 100 + (window_id % 10) as i32 * 50,
            y: 100 + (window_id % 10) as i32 * 50,
            visible: true,
            focused: false,
            window_type,
        };
        
        self.windows.insert(window_id, window_info);
        info!("创建窗口: ID={}, 标题='{}', 尺寸={}x{}, 类型={:?}", 
              window_id, title, width, height, window_type);
        
        Ok(window_id)
    }
    
    /// 关闭窗口
    pub fn close_window(&mut self, window_id: u64) -> Result<(), String> {
        if let Some(window) = self.windows.remove(&window_id) {
            info!("关闭窗口: ID={}, 标题='{}'", window_id, window.title);
            Ok(())
        } else {
            Err(format!("窗口不存在: ID={}", window_id))
        }
    }
    
    /// 设置壁纸
    pub fn set_wallpaper(&mut self, path: &str) -> Result<(), String> {
        if !self.running {
            return Err("桌面环境未运行".to_string());
        }
        
        self.wallpaper_path = path.to_string();
        info!("设置壁纸: {}", path);
        Ok(())
    }
    
    /// 显示/隐藏Dock
    pub fn set_dock_visibility(&mut self, visible: bool) -> Result<(), String> {
        if !self.running {
            return Err("桌面环境未运行".to_string());
        }
        
        self.show_dock = visible;
        info!("{}", if visible { "显示Dock" } else { "隐藏Dock" });
        Ok(())
    }
    
    /// 启用/禁用动画
    pub fn set_animations(&mut self, enabled: bool) -> Result<(), String> {
        if !self.running {
            return Err("桌面环境未运行".to_string());
        }
        
        self.enable_animations = enabled;
        info!("{}", if enabled { "启用动画" } else { "禁用动画" });
        Ok(())
    }
    
    /// 获取窗口列表
    pub fn get_windows(&self) -> Vec<&WindowInfo> {
        self.windows.values().collect()
    }
    
    /// 聚焦窗口
    pub fn focus_window(&mut self, window_id: u64) -> Result<(), String> {
        if !self.running {
            return Err("桌面环境未运行".to_string());
        }
        
        // 先取消所有窗口的聚焦状态
        for window in self.windows.values_mut() {
            window.focused = false;
        }
        
        if let Some(window) = self.windows.get_mut(&window_id) {
            window.focused = true;
            info!("聚焦窗口: ID={}, 标题='{}'", window_id, window.title);
            Ok(())
        } else {
            Err(format!("窗口不存在: ID={}", window_id))
        }
    }
    
    /// 移动窗口
    pub fn move_window(&mut self, window_id: u64, x: i32, y: i32) -> Result<(), String> {
        if let Some(window) = self.windows.get_mut(&window_id) {
            window.x = x;
            window.y = y;
            info!("移动窗口: ID={}, 标题='{}', 新位置=({}, {})", 
                  window_id, window.title, x, y);
            Ok(())
        } else {
            Err(format!("窗口不存在: ID={}", window_id))
        }
    }
    
    /// 调整窗口大小
    pub fn resize_window(&mut self, window_id: u64, width: u32, height: u32) -> Result<(), String> {
        if let Some(window) = self.windows.get_mut(&window_id) {
            window.width = width;
            window.height = height;
            info!("调整窗口大小: ID={}, 标题='{}', 新尺寸={}x{}", 
                  window_id, window.title, width, height);
            Ok(())
        } else {
            Err(format!("窗口不存在: ID={}", window_id))
        }
    }
}